https://www.researchgate.net/publication/269410075_Netherlands_Journal_of_Geosciences_-Geologie_en_Mijnbouw_Additional_services_for_Netherlands_Journal_of_Geosciences_-Geologie_en_Mijnbouw_Greensand_mosasaurs_of_New_Jersey_and_the_Cretaceous-Paleogene